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First step of implementation of WL#1518 "make bundled zlib

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usable for unix builds": zlib 1.2.1 imported


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VC++Files/zlib/zlib.dsp:
  Modified to suit zlib upgrade.
mysys/my_crc32.c:
  Modified to suit zlib upgrade.
zlib/ChangeLog:
  zlib 1.2.1 imported
zlib/FAQ:
  zlib 1.2.1 imported
zlib/INDEX:
  zlib 1.2.1 imported
zlib/README:
  zlib 1.2.1 imported
zlib/adler32.c:
  zlib 1.2.1 imported
zlib/algorithm.txt:
  zlib 1.2.1 imported
zlib/compress.c:
  zlib 1.2.1 imported
zlib/crc32.c:
  zlib 1.2.1 imported
zlib/deflate.c:
  zlib 1.2.1 imported
zlib/deflate.h:
  zlib 1.2.1 imported
zlib/gzio.c:
  zlib 1.2.1 imported
zlib/inffast.c:
  zlib 1.2.1 imported
zlib/inffast.h:
  zlib 1.2.1 imported
zlib/inffixed.h:
  zlib 1.2.1 imported
zlib/inflate.c:
  zlib 1.2.1 imported
zlib/inftrees.c:
  zlib 1.2.1 imported
zlib/inftrees.h:
  zlib 1.2.1 imported
zlib/trees.c:
  zlib 1.2.1 imported
zlib/uncompr.c:
  zlib 1.2.1 imported
zlib/zconf.h:
  zlib 1.2.1 imported
zlib/zlib.3:
  zlib 1.2.1 imported
zlib/zlib.h:
  zlib 1.2.1 imported
zlib/zutil.c:
  zlib 1.2.1 imported
zlib/zutil.h:
  zlib 1.2.1 imported
This commit is contained in:
unknown
2004-07-21 17:36:26 -07:00
parent 2f26571fdc
commit 9fe0a2fa8d
107 changed files with 5724 additions and 16653 deletions
Download Patch File Download Diff File Expand all files Collapse all files

87
zlib/trees.c
View File

@ -1,6 +1,6 @@
/* trees.c -- output deflated data using Huffman coding
* Copyright (C) 1995-2002 Jean-loup Gailly
* For conditions of distribution and use, see copyright notice in zlib.h
* Copyright (C) 1995-2003 Jean-loup Gailly
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/*
@ -230,7 +230,6 @@ local void send_bits(s, value, length)
#endif /* DEBUG */
#define MAX(a,b) (a >= b ? a : b)
/* the arguments must not have side effects */
/* ===========================================================================
@ -335,42 +334,42 @@ void gen_trees_header()
Assert (header != NULL, "Can't open trees.h");
fprintf(header,
"/* header created automatically with -DGEN_TREES_H */\n\n");
"/* header created automatically with -DGEN_TREES_H */\n\n");
fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");
for (i = 0; i < L_CODES+2; i++) {
fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,
static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));
fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,
static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));
}
fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");
for (i = 0; i < D_CODES; i++) {
fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,
static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,
static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
}
fprintf(header, "const uch _dist_code[DIST_CODE_LEN] = {\n");
for (i = 0; i < DIST_CODE_LEN; i++) {
fprintf(header, "%2u%s", _dist_code[i],
SEPARATOR(i, DIST_CODE_LEN-1, 20));
fprintf(header, "%2u%s", _dist_code[i],
SEPARATOR(i, DIST_CODE_LEN-1, 20));
}
fprintf(header, "const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
fprintf(header, "%2u%s", _length_code[i],
SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
fprintf(header, "%2u%s", _length_code[i],
SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
}
fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");
for (i = 0; i < LENGTH_CODES; i++) {
fprintf(header, "%1u%s", base_length[i],
SEPARATOR(i, LENGTH_CODES-1, 20));
fprintf(header, "%1u%s", base_length[i],
SEPARATOR(i, LENGTH_CODES-1, 20));
}
fprintf(header, "local const int base_dist[D_CODES] = {\n");
for (i = 0; i < D_CODES; i++) {
fprintf(header, "%5u%s", base_dist[i],
SEPARATOR(i, D_CODES-1, 10));
fprintf(header, "%5u%s", base_dist[i],
SEPARATOR(i, D_CODES-1, 10));
}
fclose(header);
@ -675,7 +674,8 @@ local void build_tree(s, desc)
/* Create a new node father of n and m */
tree[node].Freq = tree[n].Freq + tree[m].Freq;
s->depth[node] = (uch) (MAX(s->depth[n], s->depth[m]) + 1);
s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ?
s->depth[n] : s->depth[m]) + 1);
tree[n].Dad = tree[m].Dad = (ush)node;
#ifdef DUMP_BL_TREE
if (tree == s->bl_tree) {
@ -930,39 +930,39 @@ void _tr_flush_block(s, buf, stored_len, eof)
/* Build the Huffman trees unless a stored block is forced */
if (s->level > 0) {
/* Check if the file is ascii or binary */
if (s->data_type == Z_UNKNOWN) set_data_type(s);
/* Check if the file is ascii or binary */
if (s->data_type == Z_UNKNOWN) set_data_type(s);
/* Construct the literal and distance trees */
build_tree(s, (tree_desc *)(&(s->l_desc)));
Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
s->static_len));
/* Construct the literal and distance trees */
build_tree(s, (tree_desc *)(&(s->l_desc)));
Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
s->static_len));
build_tree(s, (tree_desc *)(&(s->d_desc)));
Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
s->static_len));
/* At this point, opt_len and static_len are the total bit lengths of
* the compressed block data, excluding the tree representations.
*/
build_tree(s, (tree_desc *)(&(s->d_desc)));
Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
s->static_len));
/* At this point, opt_len and static_len are the total bit lengths of
* the compressed block data, excluding the tree representations.
*/
/* Build the bit length tree for the above two trees, and get the index
* in bl_order of the last bit length code to send.
*/
max_blindex = build_bl_tree(s);
/* Build the bit length tree for the above two trees, and get the index
* in bl_order of the last bit length code to send.
*/
max_blindex = build_bl_tree(s);
/* Determine the best encoding. Compute first the block length in bytes*/
opt_lenb = (s->opt_len+3+7)>>3;
static_lenb = (s->static_len+3+7)>>3;
/* Determine the best encoding. Compute the block lengths in bytes. */
opt_lenb = (s->opt_len+3+7)>>3;
static_lenb = (s->static_len+3+7)>>3;
Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
s->last_lit));
Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
s->last_lit));
if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
} else {
Assert(buf != (char*)0, "lost buf");
opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
}
#ifdef FORCE_STORED
@ -1107,7 +1107,8 @@ local void compress_block(s, ltree, dtree)
} /* literal or match pair ? */
/* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
Assert(s->pending < s->lit_bufsize + 2*lx, "pendingBuf overflow");
Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
"pendingBuf overflow");
} while (lx < s->last_lit);
@ -1199,7 +1200,7 @@ local void copy_block(s, buf, len, header)
s->last_eob_len = 8; /* enough lookahead for inflate */
if (header) {
put_short(s, (ush)len);
put_short(s, (ush)len);
put_short(s, (ush)~len);
#ifdef DEBUG
s->bits_sent += 2*16;